2 years ago

Find the points of intersection of each pair of curves in the given interval.
i) y=sin2x, y=sinx

set the y's equal...:
sin2x = sinx given
2sinxcosx = sinx use the double angle formula for sine
2sinxcosx - sinx = 0 move the sinx over to the left side
sinx(2cosx - 1) = 0 factor
can you do the rest from here?